diff --git a/.github/workflows/ci.yaml b/.github/workflows/ci.yaml
index 84166db..e85fa42 100644
--- a/.github/workflows/ci.yaml
+++ b/.github/workflows/ci.yaml
@@ -47,3 +47,12 @@ jobs:
          with:
            setup-go: "true"
        - run: make test-ci
+  subgraphs-check:
+    name: Check GraphQL schemas
+    runs-on: ubuntu-latest
+    env:
+      COSMO_API_KEY: ${{ secrets.COSMO_API_KEY }}
+    steps:
+       - uses: actions/checkout@v6.0.2
+       - uses: ./.github/actions/setup
+       - run: make check-subgraphs
diff --git a/.github/workflows/deploy.yaml b/.github/workflows/deploy.yaml
new file mode 100644
index 0000000..701672f
--- /dev/null
+++ b/.github/workflows/deploy.yaml
@@ -0,0 +1,17 @@
+name: CI
+
+on:
+  push:
+    branches:
+      - main
+
+jobs:
+  deploy:
+    runs-on: ubuntu-latest
+    env:
+      COSMO_API_KEY: ${{ secrets.COSMO_API_KEY }}
+    steps:
+     - uses: actions/checkout@v6.0.2
+     - uses: ./.github/actions/setup
+     - run: make check-subgraphs
+     - run: make publish-ci
diff --git a/Makefile b/Makefile
index 20c3e92..1671d61 100644
--- a/Makefile
+++ b/Makefile
@@ -15,6 +15,9 @@ build-ci:
 compose:
 	@pnpm compose
 
+check-subgraphs:
+	@pnpm subgraphs:check
+
 # Build linux plugin binary + Docker image (run `make compose` first if config.json is missing)
 # for local development
 # Usage: make docker-local
@@ -26,6 +29,9 @@ docker-local:
 generate:
 	@pnpm generate
 
+publish-ci:
+	@pnpm publish:ci
+
 # Test all plugins
 test:
 	@pnpm test
diff --git a/README.md b/README.md
index 5bbbe66..db6235a 100644
--- a/README.md
+++ b/README.md
@@ -51,7 +51,7 @@ Run `wgc demo` and make sure you are logged in to your Cosmo Cloud account. Foll
 ### Implementing `averageRating` field
 
 1. Fork this repo.
-2. Add `ROUTER_TOKEN` to your CI secrets (TBD - Github workflow)
+2. Create a secret named `COSMO_API_KEY` for your forked repo with your private API key ([Studio API Keys documentation](https://cosmo-docs.wundergraph.com/studio/api-keys)).
 3. In `plugins/reviews/src/schema.graphql` expand the schema file:
 
 ```diff
@@ -64,7 +64,7 @@ Run `wgc demo` and make sure you are logged in to your Cosmo Cloud account. Foll
 ```
 
 4. Run `make generate` in `plugins/reviews` directory to generate gRPC methods.
-5. Add the new field `AverageRating` to the `Product` struct, using `calculateAverageRating` function that is provided:
+5. Add the new field `AverageRating` to the `Product` struct in `plugins/reviews/src/main.go`. Use the `calculateAverageRating` function that is provided to implement the calculation:
 
 ```diff
 @@ -62,6 +62,7 @@ func (s *ReviewsService) LookupProductById(ctx context.Context, req *service.Loo
diff --git a/package.json b/package.json
index 9649c80..3be75e6 100644
--- a/package.json
+++ b/package.json
@@ -8,10 +8,12 @@
     "build": "pnpm -r build",
     "build:ci": "pnpm -r --workspace-concurrency=1 build:ci",
     "compose": "wgc router compose -i ./plugins/graph.yaml -o ./config.json",
+    "subgraphs:check": "pnpm -r subgraph:check",
     "format": "pnpm -r format",
     "generate": "pnpm -r generate",
     "lint": "pnpm -r lint",
     "lint:ci": "pnpm -r lint:ci",
+    "publish:ci": "pnpm -r --workspace-concurrency=1 publish:ci",
     "test": "pnpm -r test",
     "test:ci": "pnpm -r --workspace-concurrency=1 test:ci",
     "start": "pnpm build && pnpm compose && make docker-local && docker run --rm -p 3002:3002 cosmo-demo-local"
diff --git a/plugins/products/package.json b/plugins/products/package.json
index f5e52af..8833098 100644
--- a/plugins/products/package.json
+++ b/plugins/products/package.json
@@ -11,6 +11,8 @@
     "generate": "wgc router plugin generate .",
     "lint": "golangci-lint run ./...",
     "lint:ci": "golangci-lint run --allow-parallel-runners ./...",
+    "publish:ci": "wgc router plugin publish --namespace default --label graph=demo --fail-on-composition-error .",
+    "subgraph:check": "wgc subgraph check reviews --namespace default --label graph=demo --schema ./src/schema.graphql",
     "test": "wgc router plugin test .",
     "test:ci": "wgc router plugin test . --yes"
   },
diff --git a/plugins/reviews/package.json b/plugins/reviews/package.json
index d82d366..8f84bba 100644
--- a/plugins/reviews/package.json
+++ b/plugins/reviews/package.json
@@ -11,6 +11,8 @@
     "generate": "wgc router plugin generate .",
     "lint": "golangci-lint run ./...",
     "lint:ci": "golangci-lint run --allow-parallel-runners ./...",
+    "publish:ci": "wgc router plugin publish --namespace default --label graph=demo --fail-on-composition-error .",
+    "subgraph:check": "wgc subgraph check reviews --namespace default --label graph=demo --schema ./src/schema.graphql",
     "test": "wgc router plugin test .",
     "test:ci": "wgc router plugin test . --yes"
   },